EP2995433B1 - Film perforé, film de revêtement, et dispositif de stockage d'électricité - Google Patents

Film perforé, film de revêtement, et dispositif de stockage d'électricité Download PDF

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Publication number
EP2995433B1
EP2995433B1 EP14793986.2A EP14793986A EP2995433B1 EP 2995433 B1 EP2995433 B1 EP 2995433B1 EP 14793986 A EP14793986 A EP 14793986A EP 2995433 B1 EP2995433 B1 EP 2995433B1
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EP
European Patent Office
Prior art keywords
film
perforated film
holes
cut
perforated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14793986.2A
Other languages
German (de)
English (en)
Other versions
EP2995433A1 (fr
EP2995433A4 (fr
Inventor
Masaki Tomono
Jun MURAOKA
Isamu Sakayori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Pax Corp
Original Assignee
Asahi Kasei Pax Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2014041600A external-priority patent/JP6473294B2/ja
Application filed by Asahi Kasei Pax Corp filed Critical Asahi Kasei Pax Corp
Publication of EP2995433A1 publication Critical patent/EP2995433A1/fr
Publication of EP2995433A4 publication Critical patent/EP2995433A4/fr
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Publication of EP2995433B1 publication Critical patent/EP2995433B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B26D3/085—On sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D28/00—Producing nets or the like, e.g. meshes, lattices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/72—Grids
    • H01M4/74—Meshes or woven material; Expanded metal
    • H01M4/742—Meshes or woven material; Expanded metal perforated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • B26F2210/12—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of fabrics
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a perforated film, a coating film, and an electricity storage device.
  • perforated film obtained by providing holes on a sheet manufactured from a synthetic resin, a film, metallic foil or the like.
  • the perforated film is used for various uses. Examples of the uses include freshness preservation of vegetables, fruits or the like, a back sheet of diapers, sanitary goods or the like, a deoxidizer, and a moisture absorbent. According to the respective uses, gas permeation amounts for air, oxygen, hydrogen, steam or the like are controlled by a shape, a size, the number and the like of holes provided on the perforated film.
  • a perforating apparatus including a pair of roll-like cutters (for example, see Patent Literature 1 and Patent Literature 2).
  • a plurality of first cutting edges provided continuously in a circumferential direction are arranged in an axial direction on a peripheral surface of one roll-like cutter, and a plurality of second cutting edges provided continuously in the axial direction are arranged in the circumferential direction on a peripheral surface of the other roll-like cutter.
  • a sheet which is a perforation target object is held between the pair of roll-like cutters, the pair of roll-like cutters are rotated in mutually opposite directions, and thus the sheet is perforated at a part where the first cutting edge and the second cutting edge intersect.
  • tension is sometimes applied in a length direction of the film or a width direction of the film.
  • tension is sometimes applied in a longitudinal direction (MD: Machine Direction) of the film.
  • MD Machine Direction
  • TD Transverse Direction
  • an object of the present invention is to provide a perforated film having a structure capable of improving tensile strength in a longitudinal direction and/or a width direction without damaging gas permeability, a coating film, and an electricity storage device.
  • a perforated film relating to one aspect of the present invention is a perforated film provided with holes.
  • Each of the holes is disposed on an intersection of a first cut provided on a plurality of first virtual lines extending along a first direction and a second cut provided on a plurality of second virtual lines extending along a second direction, and the first direction is different from a width direction and a direction orthogonal to the width direction.
  • the first virtual line extends in the first direction different from the width direction and the direction (longitudinal direction) orthogonal to the width direction
  • an array of the holes along the first virtual line is inclined to the width direction and the longitudinal direction.
  • the array of the holes along the second virtual line is different from at least the width direction and the longitudinal direction, compared to a configuration that the holes are arrayed along the width direction and the longitudinal direction, the tensile strength in the direction different from the second direction of the width direction and the longitudinal direction is improved.
  • the number of the holes per stipulated area is not reduced.
  • the second direction may be different from the width direction and the direction orthogonal to the width direction.
  • the array of the holes along the first virtual line and the array of the holes along the second virtual line are inclined to the width direction and the longitudinal direction. Therefore, since the array of the holes on the perforated film is inclined to both of the width direction and the longitudinal direction, compared to the configuration that the holes are arrayed along the width direction and the longitudinal direction, the tensile strength in the width direction and the longitudinal direction is improved. As a result, in the case that tension is applied in the width direction and the longitudinal direction, occurrence of fracture can be suppressed, and processability can be further improved.
  • the first direction may be inclined at an angle larger than 30° and smaller than 60° to the width direction
  • the second direction may be inclined at an angle larger than 30° and smaller than 60° to the width direction. Since the first virtual line extends in the first direction inclined at the angle larger than 30° and smaller than 60° to the width direction, the first cuts and the array of the holes along the first virtual line are inclined at the angle larger than 30° and smaller than 60° to the width direction. Also, the second cuts and the array of the holes along the second virtual line also extend in the second direction inclined at the angle larger than 30° and smaller than 60° to the width direction.
  • the tensile strength in the width direction and the longitudinal direction is improved by stress relaxation.
  • tension is applied in the width direction and the longitudinal direction, occurrence of fracture can be suppressed, and processability can be further improved.
  • improvement of the tensile strength enables the shape and size of the holes to be held in a uniform state, a gap of a gas amount that permeates the perforated film in a design value can be suppressed.
  • a ratio of a length ⁇ of the first cut and a diameter ⁇ of the hole may be 0 ⁇ ⁇ / ⁇ ⁇ 500
  • a ratio of a length ⁇ of the second cut and the diameter ⁇ of the hole may be 0 ⁇ ⁇ / ⁇ ⁇ 500
  • a difference between a first angle which is an inclination angle of the first virtual line to the width direction and a second angle which is an inclination angle of the second virtual line to the width direction may be -5° or larger and +5° or smaller.
  • the holes are approximately arranged symmetrically to the width direction, stability of the tensile strength of the perforated film is improved.
  • tension is applied in the longitudinal direction to the perforated film, deformations of a hole shape and a film can be reduced.
  • the first virtual line and the second virtual line may orthogonally intersect. Also in this case, when tension is applied in the direction different from the array direction of the holes in the width direction and the longitudinal direction, occurrence of fracture can be suppressed, and processability can be improved.
  • Two holes arranged closest among the holes may be lined along a direction different from the width direction and the direction orthogonal to the width direction.
  • the tensile strength in the perforated film declines as a distance between the two holes adjacent to each other along the direction that tension is applied is shorter. Therefore, by arraying the two holes arranged closest along the direction different from the width direction and the longitudinal direction, decline of the tensile strength in the width direction and the longitudinal direction can be suppressed.
  • a coating film relating to another aspect of the present invention may comprise one of the perforated films described in the paragraphs above, and a membrane formed by applying a liquid or a viscous body on at least one surface of the perforated film and drying the liquid or the viscous body.
  • the coating film that protects characteristics that the perforated film has, or has new characteristics can be formed.
  • the membrane formed on at least one surface of the perforated film by a hole shape of the perforated film, a high anchor effect can be obtained. Therefore, the membrane is not easily detached from the perforated film, and the characteristics of the coating film can be substantially improved.
  • An electricity storage device relating to another aspect of the present invention may comprise an electrode including one of the perforated films described in the paragraphs above, and a coated material formed by applying electrode paste on at least one surface of the perforated film and drying the electrode paste.
  • tensile strength in a width direction and a longitudinal direction can be improved without damaging gas permeability.
  • Figure 1 is a plan view schematically illustrating a configuration of a perforated film relating to a first embodiment
  • a perforated film 1 is a long-length film extending in a direction A, and is provided with a plurality of holes 11.
  • the direction A is a longitudinal direction (MD).
  • a direction B orthogonal to the direction A is a width direction (TD).
  • the perforated film 1 can be used for various uses such as vaporized substance permeation of an insect-repelling component permeable membrane or the like, sterilization gas permeation of an ETO gas permeable membrane or the like, aromatic substance permeation of an aromatic component permeable membrane or the like, contents generation gas permeation of a fermented food gas permeable membrane or the like, a flexible substrate, an electricity storage device, a filter, and steam vent during microwave oven cooking, for example.
  • the perforated film 1 may be a roll-like wound body or may be a cut piece.
  • a length and a width of the perforated film 1 are not stipulated in particular, and are preferably such a length and a width that the perforated film 1 can be rewound or set in equipment such as a film forming machine, laminator, a slit machine or a filler machine in which it is manufactured and used as the roll-like wound body.
  • equipment such as a film forming machine, laminator, a slit machine or a filler machine in which it is manufactured and used as the roll-like wound body.
  • the length of the perforated film 1 is 2000 m or shorter, and it is preferable that the width of the perforated film 1 is 1500 mm or shorter.
  • a thickness of the perforated film 1 is about 6 ⁇ m to 200 ⁇ m for example.
  • a perforation rate of the perforated film 1 can be set according to a use, and is about 1 ⁇ 10 -6 % to 1 ⁇ 10 -1 % for example.
  • a nitrogen permeation amount of the perforated film 1 is about 6.0 ⁇ 10 6 cm 3 /(m 2 ⁇ day ⁇ atm).
  • a film material configuring the perforated film for example, polyethylene terephthalate (PET), biaxially oriented nylon (ONy), biaxially oriented polypropylene (OPP), polyimide, ethylene-vinyl alcohol copolymer (EVOH), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) or the like can be used.
  • PET polyethylene terephthalate
  • ONy biaxially oriented nylon
  • OPP biaxially oriented polypropylene
  • polyimide polyimide
  • EVOH ethylene-vinyl alcohol copolymer
  • LDPE low-density polyethylene
  • LLDPE linear low-density polyethylene
  • metallic foil such as aluminum foil and copper foil, cellophane, paper, non-woven fabric or the like can be also used.
  • the perforated film 1 has one surface 1a and the other surface 1b on an opposite side of the one surface 1a.
  • the perforated film 1 has a side 1c and a side 1d facing each other in the direction B (width direction).
  • the side 1c and the side 1d extend along the direction A (longitudinal direction).
  • the holes 11 are the holes passing through the perforated film 1, and has a circular shape or a square shape for example.
  • a diameter of the holes 11 is about 10 ⁇ m to 0.2 mm (200 ⁇ m) for example.
  • the holes 11 are regularly arranged.
  • Each of the holes 11 is arranged at an intersection of a cut provided on a plurality of virtual lines VL1 (first virtual lines) extending along a direction D1 (first direction) and a cut provided on a plurality of virtual lines VL2 (second virtual lines) extending along a direction D2 (second direction) (cuts will be described later).
  • the direction D1 is different from the direction A and the direction B, and is inclined at an angle ⁇ 1 (first angle) to the direction B. That is, the virtual line VL1 is inclined at the angle ⁇ 1 to the direction B.
  • the direction D2 is different from the direction A and the direction B, and is inclined at an angle ⁇ 2 (second angle) on a side opposite to the inclining direction of the direction D1 to the direction B. That is, the virtual line VL2 is inclined at the angle ⁇ 2 to the direction B.
  • the angle ⁇ 1 and the angle ⁇ 2 are larger than 30° and are smaller than 60°.
  • the angle ⁇ 1 and the angle ⁇ 2 are the same or almost the same, and a difference between the angle ⁇ 1 and the angle ⁇ 2 is about -5° or larger and +5° or smaller for example.
  • the angle ⁇ 1 is 45° and the angle ⁇ 2 is 45°.
  • the virtual line VL1 and the virtual line VL2 orthogonally intersect.
  • the plurality of virtual lines VL1 are arrayed at a fixed pitch P1, and the pitch P1 is about 0.5 mm or longer for example.
  • the plurality of virtual lines VL2 are arrayed at a fixed pitch P2, and the pitch P2 is about 0.5 mm or longer for example.
  • a plurality of squares are formed by the virtual lines VL1 and the virtual lines VL2.
  • One diagonal line of the square is along the direction A, and the other diagonal line is along the direction B.
  • the holes 11 are positioned at vertexes of the individual squares.
  • the pitch P1 and the pitch P2 are not limited to 0.5 mm or longer, and can be set to be shorter than 0.5 mm as needed.
  • Figure 2 is a diagram schematically illustrating a configuration of a manufacturing apparatus 2 for manufacturing the perforated film 1.
  • Figure 3 is a diagram for illustrating a main part of the manufacturing apparatus 2. As illustrated in Figure 2 and Figure 3 , the manufacturing apparatus 2 includes a roll cutter 21 and a roll cutter 22.
  • the roll cutter 21 and the roll cutter 22 are cylindrical or columnar cutters.
  • the roll cutter 21 and the roll cutter 22 are arranged facing each other.
  • An axis of the roll cutter 21 and an axis of the roll cutter 22 are parallel to each other, and the roll cutter 21 and roll cutter 22 are separated so as to hold a perforation target object therebetween.
  • Supports 24 are provided on both ends in an axial direction of the roll cutter 21, and the roll cutter 21 is supported to a frame 23 rotatably around the axis through the supports 24.
  • Supports 25 are provided on both ends in an axial direction of the roll cutter 22, and the roll cutter 22 is supported to the frame 23 rotatably around the axis through the supports 25.
  • the roll cutter 21 and the roll cutter 22 are rotated in linkage, and a rotating direction C1 of the roll cutter 21 is opposite to a rotating direction C2 of the roll cutter 22.
  • cutting edges 211 are provided on a peripheral surface of the roll cutter 21, cutting edges 211 are provided.
  • the plurality of cutting edges 211 are inclined at the angle ⁇ 1 to the axial direction of the roll cutter 21, provided continuously in a circumferential direction, and provided at the pitch P1.
  • cutting edges 221 are provided on a peripheral surface of the roll cutter 22, cutting edges 221 are provided.
  • the plurality of cutting edges 221 are inclined at the angle ⁇ 2 to the axial direction of the roll cutter 22, provided continuously in the circumferential direction, and provided at the pitch P2.
  • the cutting edges 211 and the cutting edges 221 are inclined in the same direction to the axial direction.
  • the cutting edges 211 and the cutting edges 221 may be provided intermittently at the pitch P1 and the pitch P2 respectively, or may be helically provided.
  • Figure 4(a) is an enlarged plan view schematically illustrating the periphery of the holes 11
  • Figure 4(b) is an enlarged perspective view schematically illustrating the periphery of the holes 11.
  • Figure 5 is a sectional view of a V-V line arrow part of Figure 4(a) .
  • a film 10 which is a perforation target object is prepared first.
  • a long-length film such as a roll-like film can be used.
  • one end of the film 10 is held between the roll cutter 21 and the roll cutter 22 of the manufacturing apparatus 2.
  • the cutting edges 211 of the roll cutter 21 are in contact with one surface 10a of the film 10, and the cutting edges 221 of the roll cutter 22 are in contact with the other surface 10b of the film 10.
  • the film 10 is conveyed along the longitudinal direction of the film 10, and the film 10 is wound in a roll shape.
  • the cutting edges 211 are pressed to one surface 10a of the film 10, and lines L1 which are traces of the cutting edges 211 are formed on one surface 10a. Also, the cutting edges 221 are pressed to the other surface 10b of the film 10, and lines L2 which are traces of the cutting edges 221 are formed on the other surface 10b.
  • the plurality of lines L1 are inclined at the angle ⁇ 1 to the width direction of the film 10, extend in the longitudinal direction of the film 10, and are formed at the pitch P1.
  • the plurality of lines L2 are inclined at the angle ⁇ 2 on the side opposite to the inclining direction of the lines L1 to the width direction of the film 10, extend in the longitudinal direction of the film 10, and are formed at the pitch P2.
  • the film 10 is pressurized simultaneously from one surface 10a and the other surface 10b. Therefore, a cut (first cut) 11a is formed on one surface 10a of the film 10, and a cut (second cut) 11b is formed on the other surface 10b of the film 10.
  • the cut 11a is a part cut toward the other surface 10b, and a cut amount gradually increases toward the part where the cutting edge 211 and the cutting edge 221 intersect.
  • the cut 11b is a part cut toward one surface 10a, and the cut amount gradually increases toward the part where the cutting edge 211 and the cutting edge 221 intersect. Since these cuts 11a and 11b have a shape that the cut amount gradually increases, resistance and pressure loss when a gas, a liquid and a viscous body permeate are reduced, and gas permeability and liquid permeability are improved. Then, the film 10 is penetrated in a thickness direction at the parts where the cutting edges 211 and the cutting edges 221 intersect, and the holes 11 are formed.
  • the holes 11 are continuously formed on the film 10 at the parts where the cutting edges 211 and the cutting edges 221 intersect, and the perforated film 1 is manufactured.
  • the lines L1 formed in a process of manufacturing the perforated film 1 coincide with the virtual lines VL1 (see Figure 1 ), and the lines L2 coincide with the virtual lines VL2 (see Figure 1 ).
  • the cutting edge 211 provided on the circumference of the roll cutter 21 and the cutting edge 221 provided on the circumference of the roll cutter 22 are brought into contact with the film 10. Therefore, a pressure from one surface 10a of the film 10 and a pressure from the other surface 10b are equally applied to the film 10.
  • unevenness such as burrs and flash is not easily generated in the vicinity of the hole 11, and the perforated film 1 having a flat surface is obtained even after the hole 11 is formed. Wrinkles and bumps are not easily generated even when the perforated film 1 is wound in the roll shape, a wound state is excellent, a winding mark is not made, and an excellent product is obtained.
  • a ratio of a length ⁇ of the cut 11a and a diameter ⁇ of the hole 11 is in a range of 0 ⁇ ⁇ / ⁇ ⁇ 500. It is preferable that a ratio of a length ⁇ of the cut 11b and the diameter ⁇ of the hole 11 is in a range of 0 ⁇ ⁇ / ⁇ ⁇ 500. Further, it is more preferable that they are in the range of 0 ⁇ ⁇ / ⁇ ⁇ 300 and 0 ⁇ ⁇ / ⁇ ⁇ 300.
  • the cuts 11a and 11b are surely generated in the case of using the manufacturing apparatus 2 illustrated in Figure 2 .
  • the hole 11 includes the cut 11a positioned on the side of one surface 10a of the film 10, the cut 11b positioned on the side of the other surface 10b, and an area 11c positioned between the cut 11a and the cut 11b.
  • the cut 11a, the cut 11b and the area 11c are communicated with each other.
  • a center of the cut 11a, a center of the cut 11b, and a center of the area 11c may overlap with each other along the direction C.
  • the cut 11a has a shape of opening to one surface 10a of the film 10 and spreading toward one surface 10a from the side of the other surface 10b. At least one cross section in the cut 11a spreads so as to draw a roughly circular arcuate shape on the cross section toward one surface 10a from the side of the other surface 10b.
  • the cut 11a may be positioned more on the side of one surface 10a than a center side of the film 10 in the thickness direction.
  • the maximum depth of the cut 11a is about 0.5 ⁇ m to 100 ⁇ m for example.
  • a diameter d1 which is the maximum diameter of the cut 11a along the direction D1 is about 100 ⁇ m to 6000 ⁇ m for example.
  • a diameter d2 which is the minimum diameter of the cut 11a along the direction D1 is about 0.5 ⁇ m to 200 ⁇ m for example.
  • the cut 11b has a shape of opening to the other surface 10b and spreading toward the other surface 10b from the side of one surface 10a. At least one cross section in the cut 11b spreads so as to draw a roughly trapezoidal shape on the cross section toward the other surface 10b from the side of one surface 10a.
  • the cut 11b may be positioned more on the side of the other surface 10b than the center side of the flm 10 in the thickness direction.
  • the maximum depth of the cut 11b is about 0.5 ⁇ m to 100 ⁇ m for example.
  • a diameter d3 which is the maximum diameter of the cut 11b along the direction D1 is about 50 ⁇ m to 3000 ⁇ m for example, and is shorter than the diameter d1 of the cut 11a.
  • a diameter d4 which is the minimum diameter of the cut 11b along the direction D1 is about 0.5 ⁇ m to 200 ⁇ m for example.
  • the area 11c is positioned between the cut 11a and the cut 11b in the direction C, and has a roughly rectangular shape on the cross section.
  • the area 11c is, for example, a rectangular parallelepiped shape, a cubic shape or various polyhedrons.
  • a depth of the area 11c is about 0.1 ⁇ m o 100 ⁇ m for example.
  • a diameter d5 of the area 11c along the direction D1 is about 2 ⁇ m to 200 ⁇ m for example.
  • a diameter d3 of the area 11c is roughly the same as the diameter d2 of the cut 11a and the diameter d4 of the cut 11b.
  • a film in a non-penetrated state having a plurality of recesses (referred to as a non-penetrated film, hereinafter) may be manufactured.
  • Figure 6 illustrates an enlarged sectional view of the periphery of the recess of the non-penetrated film.
  • the non-penetrated film 1Z can be manufactured.
  • the film 10 is pressurized simultaneously from one surface 10a and the other surface 10b.
  • a cut 11d is formed on one surface 10a of the film 10, and a cut 11e is formed on the other surface 10b of the film 10.
  • the cut 11d is a part cut toward the other surface 10b, and the cut amount gradually increases toward the part where the cutting edge 211 and the cutting edge 221 intersect.
  • the cut 11b is a part cut toward one surface 10a, and the cut amount gradually increases toward the part where the cutting edge 211 and the cutting edge 221 intersect.
  • the cut 11d provided from one surface 10a of the film 10 and the cut 11e provided from the other surface 10b are not in contact with each other, and the film 10 remains in the thickness direction. That is, a hole passing through in the thickness direction is not formed on the film 10.
  • the cut 11d is formed as the recess of one surface 10a
  • the cut 11e is formed as the recess of the other surface 10b.
  • the gas permeability can be adjusted.
  • the PET film has a property of not easily transmitting oxygen and easily transmitting steam.
  • the LLDPE film has a property of easily transmitting the oxygen and not easily transmitting the steam.
  • the composite film having a property of not easily transmitting the oxygen and the steam is attained.
  • the non-penetrated film for which a plurality of cuts are provided only on the PET film in the composite film the film having the property of easily transmitting the oxygen and not easily transmitting the steam is attained. That is, the non-penetrated film capable of selectively transmitting a gas can be formed. Also, since the non-penetrated film is a stacked layer, it can be handled as a package like a bag shape or a container lid for example.
  • Figure 7(a) is a diagram illustrating an arrangement of holes 111 in a perforated film 100 of a comparative example
  • Figure 7(b) is a diagram illustrating one example of an arrangement of the holes 11 in the perforated film 1
  • Figure 7(c) is a diagram illustrating another example of the arrangement of the holes 11 in the perforated film 1.
  • the holes 111 are arranged at intersections of virtual lines VL101 and virtual lines VL102.
  • the virtual lines VL101 extend along the direction A which is the longitudinal direction of the perforated film 100
  • the virtual lines VL1102 extend along the direction B which is the width direction of the perforated film 100.
  • a pitch of the virtual lines VL101 and a pitch of the virtual lines VL102 are equal to each other, and are S.
  • a distance between the two holes 111 adjacent to each other along the direction A becomes S
  • a distance between the two holes 111 adjacent to each other along the direction B becomes S.
  • the plurality of virtual lines VL1 extend along the direction D1 different from the direction A which is the longitudinal direction of the perforated film 1 and the direction B which is the width direction of the perforated film 1, and the plurality of virtual lines VL2 extend along the direction D2 different from the direction A and the direction B.
  • the virtual lines VL1 are inclined at 45° to the direction B.
  • the virtual lines VL2 are inclined at 45° on the side opposite to the inclining direction of the virtual lines VL1 to the direction B.
  • the virtual lines VL1 and the virtual lines VL2 orthogonally intersect.
  • the pitch P1 of the virtual lines VL1 and the pitch P2 of the virtual lines VL2 are equal to each other, and are S.
  • the distance between the two holes 11 adjacent to each other along the direction A becomes 2 1/2 ⁇ S
  • the distance between the two holes 11 adjacent to each other along the direction B becomes 2 1/2 ⁇ S. Therefore, in the perforated film 1, compared to the perforated film 100, the distance between the two holes 11 adjacent to each other along the direction A and the direction B can be increased.
  • the tensile strength in the longitudinal direction and the width direction can be improved.
  • the number of the holes per stipulated area (perforation rate) of the perforated film 1 is the same as the perforation rate of the perforated film 100. Therefore, the perforated film 1 has the gas permeability (ventilation characteristic) equal to that of the perforated film 100.
  • the angle ⁇ is smaller than 60°, since the distance between the two holes 11 adjacent to each other along the direction B becomes longer than S, compared to the perforated film 100, the distance between the two holes adjacent to each other along the direction B can be increased. Therefore, compared to the perforated film 100, the tensile strength in the width direction can be improved. From the above, in the perforated film 1, in the case that the angle ⁇ is greater than 30° and is smaller than 60°, compared to the perforated film 100, the distance between the two holes adjacent to each other along the direction A and the direction B can be increased, and the tensile strength in the longitudinal direction and the width direction can be improved.
  • the perforation rate of the perforated film 1 becomes 1/sin2 ⁇ (> 1) times the perforation rate of the perforated film 100. Therefore, in the perforated film 1, the perforation rate increases compared to the perforated film 100 so that the gas permeability (ventilation characteristic) can be improved.
  • the pitch P1 and the pitch P2 become larger than the pitch of the virtual lines VL101 and the pitch of the virtual lines VL1102 of the perforated film 100. Therefore, since the distance between the holes 11 adjacent to each other can be further increased, the tensile strength in the longitudinal direction and the width direction can be further improved.
  • the plurality of holes 11 are arrayed along the virtual lines VL1 and the virtual lines VL12. Since the virtual lines VL1 extend in the direction D1 different from the direction A and the direction B and the virtual lines VL2 extend in the direction D2 different from the direction A and the direction B, the array of the holes 11 along the virtual lines VL1 and the array of the holes 11 along the virtual lines VL2 are inclined to the direction A and the direction B. Also, the distance between the two holes 11 adjacent to each other along the direction A is long compared to the perforated film 100 illustrated in Figure 7(a) , and the distance between the two holes 11 adjacent to each other along the direction B is long compared to the perforated film 100.
  • the tensile strength in the direction A and the direction B is improved.
  • tension is applied in the direction A and the direction B, occurrence of fracture can be suppressed, and processability can be improved.
  • a difference between the angle ⁇ 1 which is the inclination angle to the direction B of the virtual lines VL1 and the angle ⁇ 2 which is the inclination angle to the direction B of the virtual lines VL2 is -5° or larger and +5° or smaller.
  • the holes 11 are arranged symmetrically to the direction B, stability of the tensile strength of the perforated film 1 is improved.
  • hole shape and film deformation can be reduced.
  • Figure 8 is a plan view schematically illustrating a configuration of a perforated film relating to a second embodiment. As illustrated in Figure 8 , a perforated film 1A is different from the perforated film 1 in the first embodiment described above, in the direction D2 in which the plurality of virtual lines VL2 extend.
  • the direction D2 is the same direction as the direction B. That is, the plurality of virtual lines VL2 extend along the direction B.
  • the virtual lines VL1 and the virtual lines VL2 intersect at the angle ⁇ 1 .
  • the angle ⁇ 1 is greater than 0° and is smaller than 90°.
  • the angle ⁇ 1 may be 10° or greater in order to improve the tensile strength in the length direction, and may be 80° or smaller in order to improve the tensile strength in the width direction. Therefore, a plurality of parallelograms are formed by the virtual lines VL1 and the virtual lines VL2.
  • the holes 11 are positioned at vertexes of the individual parallelograms.
  • the perforated film 1A is obtained by changing a shape of the cutting edges 221 of the roll cutter 22 in the manufacturing apparatus 2. Specifically, in the manufacturing apparatus 2 for the perforated film 1A, the plurality of cutting edges 221 of the roll cutter 22 are continuously provided in the axial direction of the roll cutter 22, and are provided at the pitch P2 in the circumferential direction.
  • the distance between the two holes 11 adjacent to each other along the direction B becomes S/sin ⁇ 1 . Therefore, in the perforated film 1A, compared to the perforated film 100, the distance between the two holes adjacent to each other along the direction B can be increased, and the tensile strength in the width direction can be improved.
  • the perforated film 1A since the holes 11 are not arrayed along the direction A, in the case that tension is applied in the longitudinal direction, force acting on the two holes 11 adjacent to each other is dispersed. Therefore, compared to the perforated film 100, the tensile strength in the longitudinal direction can be improved.
  • the perforation rate of the perforated film 1A is 1/sin ⁇ 1 (> 1) times the perforation rate of the perforated film 100. Therefore, in the perforated film 1A, the perforation rate increases compared to the perforated film 100 so that the gas permeability (ventilation characteristic) can be improved.
  • Figure 9 is a plan view schematically illustrating a configuration of a perforated film relating to a third embodiment.
  • a perforated film 1B is different from the perforated film 1 in the first embodiment described above, in the direction D1 in which the plurality of virtual lines VL1 extend, the direction D2 in which the plurality of virtual lines VL2 extend, the pitch P1 and the pitch P2.
  • the direction D1 is different from the direction A and the direction B, and is inclined at the angle ⁇ 1 to the direction B. That is, the virtual lines VL1 are inclined at the angle ⁇ 1 to the direction B.
  • the direction D2 is different from the direction A and the direction B, and is inclined at the angle ⁇ 2 on the side opposite to the inclining direction of the direction D1 to the direction B. That is, the virtual lines VL2 are inclined at the angle ⁇ 2 to the direction B.
  • the angle ⁇ 1 and the angle ⁇ 2 are greater than 30° and are smaller than 60°.
  • the angle ⁇ 1 and the angle ⁇ 2 may be 10° or greater in order to improve the tensile strength in the longitudinal direction, and may be 80° or smaller in order to improve the tensile strength in the width direction. Also, the angle ⁇ 1 and the angle ⁇ 2 are different.
  • the plurality of virtual lines VL1 are arrayed at a fixed interval, and the pitch P1 thereof is about 0.5 mm or longer for example.
  • the plurality of virtual lines VL2 are arrayed at a fixed interval, and the pitch P2 thereof is about 0.5 mm or longer for example.
  • the pitch P1 and the pitch P2 are different. Therefore, a plurality of parallelograms are formed by the virtual lines VL1 and the virtual lines VL2.
  • the holes 11 are positioned at vertexes of the individual parallelograms.
  • the pitch P1 and the pitch P2 are not limited to 0.5 mm or longer, and can be set to be shorter than 0.5 mm as needed.
  • the perforated film 1B can be obtained by changing the angle ⁇ 1 of the cutting edges 211 of the roll cutter 21 and the angle ⁇ 2 of the cutting edges 221 of the roll cutter 22 in the manufacturing apparatus 2 to desired angles.
  • the perforated film relating to the present invention is not limited to the embodiments described above.
  • the two holes 11 arranged closest among the plurality of holes 11 may be arrayed so as to be lined along a direction different from the direction A and the direction B.
  • the tensile strength in the perforated films 1 and 1B declines as a distance between the two holes 11 adjacent to each other along the direction that tension is applied is shorter. Therefore, by arraying the two holes 11 arranged closest along the direction different from the direction A and the direction B, decline of the tensile strength in the direction A and the direction B can be suppressed.
  • the pitch P1 and the pitch P2 may be the same or may be different.
  • the angle ⁇ 1 and the angle ⁇ 2 may be the same or may be different.
  • a stacked film may be attained. That is, by gluing the perforated film 1 to an unperforated film, a stacked film may be attained.
  • the perforated films 1, 1A and 1B may be coated with various fluid substances.
  • coating indicates adhesion and fixation of an applied substance to the perforated film by hardening treatment or the like.
  • a coating film that protects characteristics of the perforated film, or has new characteristics can be formed when using a product.
  • Figures 10(a)-10(d) are diagrams illustrating a coating method to the perforated film 1.
  • a fluid substance 41 is applied to one surface 1a of the perforated film 1.
  • the fluid substance 41 is applied to the perforated film 1 so as to fill the cut 11a in the hole 11.
  • the fluid substance 41 is a substance in a paste shape, a liquid shape, a viscous body shape, a gel shape or the like having a certain degree of fluidity.
  • Examples of the fluid substance 41 include a solution containing a conductive material or an active material, a conductive polymer, a heat-resistant resin, and the like.
  • the conductive material include metal (gold, silver or the like) particulates, an alloy material, and the like.
  • Examples of the active material include lithium cobaltate, iron lithium phosphate, manganese lithium phosphate, cobalt lithium phosphate, a carbon-based material (carbon black, graphite (black lead), graphene), and the like.
  • Examples of the conductive polymer include polyacetylene, poly (p-phenylenevinylene), polypyrrole, polythiophene, polyaniline, and the like.
  • Examples of the heat-resistant resin include polyimide, polyester, polybenzimidazole, and the like.
  • the fluid substance 41 that intrudes into the area 11c intrudes into the cut 11b. Since the flow of the fluid substance 41 that intrudes into the area 11c easily becomes the laminar flow as described above, the area 11c functions as a nozzle that increases the flow speed of the fluid substance 41, and the fluid substance 41 excellently intrudes into the cut 11b from the area 11c. Also, an opening area of the cut 11b increases from the area 11c to the other surface 1b. Therefore, at the cut 11b, the flow speed of the fluid substance 41 to the side of the other surface 1b decreases. By the speed decrease of the fluid substance 41 and surface tension of the fluid substance 41 on the other surface 1b, scattering from the perforated film 1 of the fluid substance 41 which intrudes into the cut 11b is suppressed.
  • a coated material 42 is formed on one surface 1a of the perforated film 1.
  • the hardening treatment include heat treatment, light (visible light, infrared ray, ultraviolet ray) irradiation treatment, and the like.
  • the coated material 42 in a membrane shape may be formed by drying liquid or a viscous body which is the fluid substance 41.
  • the coated material 42 is formed so as to cover one surface 1a, and to also fill the cut 11a, the cut 11b and the area 11c of the hole 11.
  • a second part 42b of the coated material 42 filled in the cut 11b becomes a hook to a first part 42a covering the top of one surface 1a, and the anchor effect is demonstrated. Also, in the case of executing the coating onto the perforated film 1, since fine grooves of the cut 11a or the like are formed on one surface 1a of the perforated film 1 and a surface area increases, the adhesion of the coated material 42 can be improved. Thus, peeling of the coated material 42 from one surface 1a is suppressed.
  • the coating method described above for example, by applying electrode paste to one surface 1a of the perforated film 1 and drying the electrode paste, a coating film that functions as an electrode can be manufactured.
  • the manufacturing apparatus 2 may include a plurality of sets of the roll cutter 21 and roll cutter 22 arranged in the axial direction.
  • the plurality of sets of the roll cutter 21 and roll cutter 22 may be arranged zigzag along the axial direction. That is, the individual sets of the roll cutter 21 and the roll cutter 22 may be arranged alternately on two lines extending along the axial direction.
  • the perforated film 1 which has the holes 11 of the same hole diameter and is of a larger width can be obtained. For example, in the case of using a set of long-length roll cutter and roll cutter which have a relatively small diameter, the perforated film is deformed by loads acting on the set of roll cutters, and deflection is generated on the perforated film.
  • a deflection amount of the perforated film is inversely proportional to the fourth power of a roll diameter of the roll cutter.
  • it is needed to increase the diameter of the roll of the roll cutter.
  • a strain is generated in a set of roll cutters by gravity. In this case, a difference is generated in the pressures when nipping the film.
  • the diameter of at least one of the roll cutters 21 and 22 can be reduced, and a roll width can be reduced.
  • the roll cutters 21 and 22 can be made compact, and are easily attached to a part of the existing manufacturing equipment.
  • the strain of the roll cutters 21 and 22 can be reduced, and formation accuracy of the holes 11 can be improved.
  • the lengths of the cuts 11a and 11b provided on the film 10 can be reduced. Thus, reduction of the film strength can be suppressed.
  • Figure 12(a) is a diagram illustrating an arrangement of holes of a perforated film in example 1
  • Figure 12(b) is a diagram illustrating an arrangement of holes of a perforated film in example 2
  • Figure 12(c) is a diagram illustrating an arrangement of holes of a perforated film in example 3
  • Figure 12(d) is a diagram illustrating an arrangement of holes of a perforated film in comparative example 1.
  • the holes 11 were arranged at intersections of the virtual lines VL1 inclined at the angle ⁇ 1 to TD, and the virtual lines VL2 inclined at the angle ⁇ 2 on the side opposite to the inclining direction of the virtual lines VL1 to TD.
  • the pitch P1 of the virtual lines VL1 was 5 mm
  • the pitch P2 of the virtual lines VL2 was 5 mm
  • the angle ⁇ 1 was 45°
  • the angle ⁇ 2 was 45°.
  • the holes 11 were arranged at intersections of the virtual lines VL1 extending along MD, and the virtual lines VL2 inclined at the angle ⁇ 2 to TD.
  • the pitch P1 of the virtual lines VL1 was 5 mm
  • the pitch P2 of the virtual lines VL2 was 5 mm
  • the angle ⁇ 2 was 45°. That is, the angle ⁇ 1 formed by the virtual lines VL1 and TD was 90°.
  • the holes 11 were arranged at intersections of the virtual lines VL1 inclined at the angle ⁇ 1 to TD, and the virtual lines VL2 inclined at the angle ⁇ 2 on the side opposite to the inclining direction of the virtual lines VL1 to TD.
  • the pitch P1 of the virtual lines VL1 was 5 mm
  • the pitch P2 of the virtual lines VL2 was 5 mm
  • the angle ⁇ 1 was 45°
  • the angle ⁇ 2 was 60°.
  • the holes 111 were arranged at intersections of the virtual lines VL101 extending along MD and the virtual lines VL102 extending along TD.
  • the pitch P1 of the virtual lines VL101 was 5 mm
  • the pitch P2 of the virtual lines VL102 was 5 mm. That is, the angle ⁇ 1 formed by the virtual lines VL101 and TD was 90°, and the angle ⁇ 2 formed by the virtual lines VL1102 and TD was 0°.
  • the hole diameter was set to 10 ⁇ m
  • the perforation processing was performed to a film, and a speed during processing and presence/absence of fracture of the film were confirmed.
  • processing target films a polyethylene terephthalate (PET) film with a thickness of 12 ⁇ m, and a biaxially oriented polypropylene (OPP) film with a thickness of 30 ⁇ m were used.
  • a determination method is as follows. ⁇ : Processable at a processing speed of 80 m/min or higher ⁇ : Processable at a processing speed below 80 m/min ⁇ : Processable at a processing speed below 40 m/min ⁇ : Processable at a processing speed below 20 m/min, or unprocessable due to fracture [Table 1]
  • Example 1 Example 2
  • Example 3 Comparative example 1 Perforation processing appropriateness PET ⁇ ⁇ ⁇ ⁇ OPP ⁇ ⁇ ⁇ ⁇
  • An actual hole diameter of the OPP film to which the perforation processing was performed by setting the hole diameter to 10 ⁇ m in (1) was measured by using a microscope.
  • the tensile strength of MD and TD was measured.
  • the OPP film to which the perforation processing was performed in the above-described perforation processing appropriateness evaluation was used as a measurement target film.
  • the tensile strength of MD of an unperforated OPP film was 50 N/15 mm
  • the tensile strength of TD was 75 N/15 mm.
  • Oxygen permeability and steam permeability of the OPP film to which the perforation processing was performed in (1) were measured. It is defined that the oxygen permeability of the unperforated OPP film is 1000 cc/(m 2 ⁇ day ⁇ atm), and the steam permeability is 5 g/(m 2 ⁇ day).
  • Example 1 Example 2 Example 3 Comparative example 1 Unperforated Hole diameter 10 12 10 43 - ( ⁇ m) Tensile strength (MD) 36 38 36 13 50 (N/15 mm) Tensile strength (TD) 52 15 53 16 75 (N/15 mm) Oxygen permeability 20000 14000 19000 70000 1000 (cc/(m 2 ⁇ day ⁇ atm)) Water vapor permeability 100 71 95 400 5 (g/(m 2 ⁇ day))
  • example 1 to example 3 it was confirmed that perforation processing appropriateness was higher than that in comparative example 1, the hole diameter and the gas permeability as designed were reproduced, and the tensile strength of MD was high. Also, in example 1 and example 3, it was confirmed that the tensile strength of TD was higher than that in comparative example 1.
  • the distance between the two holes 11 adjacent to each other along MD can be made longer than the distance between the two holes 111 adjacent to each other along MD in comparative example 1.
  • the perforation processing appropriateness can be improved and the tensile strength of MD can be improved.
  • the distance between the two holes 11 adjacent to each other along TD can be made longer than the distance between the two holes 111 adjacent to each other along TD in comparative example 1.
  • the tensile strength of TD can be improved.
  • the oxygen permeability and the steam permeability were measured. It is defined that the oxygen permeability of the non-processed OPP film is 1000 cc/(m 2 ⁇ day ⁇ atm), and the steam permeability is 5 g/(m 2 ⁇ day).
  • a gas permeation amount can be controlled by providing the through-holes or the non-penetrated area on the film. Also, by controlling a non-penetrated area length of the non-penetrated film, the gas permeability can be adjusted further according to uses and purposes.
  • a perforated film provided with through-holes at positions similar to example 1 and a non-penetrated film provided with a non-penetrated area of about 5 ⁇ m in the thickness direction on each of aluminum foil with the thickness of 25 ⁇ and copper foil with the thickness of 15 ⁇ were manufactured.
  • comparative example 2 by using a nip roll having thin and long conical nails, metallic foil provided with through-holes in a trapezoidal shape on the cross section by pressing the nip roll to one surface of the metallic foil at positions similar to example 1 was prepared.
  • electrode paste By applying electrode paste to each metallic foil and drying it, an electrode having the coated material was manufactured.
  • an electrode having the coated material was manufactured.
  • the adhesion of the coated material to each metallic foil and the adhesion of the coated material to the metallic foil in the reference example were compared respectively.
  • the electrode was manufactured through the following procedure.
  • the electrode paste whose main component was activated carbon particles with an average particle diameter of 2 ⁇ m was applied by using a roll coater. By drying the electrode paste, a positive electrode was manufactured.
  • Table 4 illustrates the adhesion power of the coated material to the perforated film, the non-penetrated film and the metallic foil in comparative example 2 when the adhesion power of the coated material to the metallic foil in the reference example is defined as 1.0 times.
  • the adhesion of the coated material to the metallic foil was improved to be about more than twice as high.
  • the adhesion of the coated material to the metallic foil was improved to be about more than 1.5 times higher.
  • comparative example 2 compared to the reference example, the adhesion of the coated material to the metallic foil was improved, however, an effect of the perforation processing was small, and the coated material was more easily peeled off from the metallic foil compared to the perforated film and the non-penetrated film.
  • the perforated film relating to one form of the present invention can be used for various uses such as vaporized substance permeation of an insect-repelling component permeable membrane or the like, sterilization gas permeation of an ETO gas permeable membrane or the like, aromatic substance permeation of an aromatic component permeable membrane or the like, contents generation gas permeation of a fermented food gas permeable membrane or the like, a flexible substrate, an electricity storage device, a filter, and steam vent during microwave oven cooking, for example.

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Claims (9)

  1. Film perforé (1, 1A, 1B) pourvu de trous (11),
    dans lequel chacun des trous est disposé sur une intersection d'une première entaille (11a) présente sur une première ligne virtuelle (VL1) se prolongeant le long d'une première direction (D1) et d'une deuxième entaille (11b) présente sur une deuxième ligne virtuelle (VL2) se prolongeant le long d'une deuxième direction (D2),
    caractérisé en ce que la première direction est différente d'une direction transversale (B, TD) et d'une direction (A, DM) orthogonale à la direction transversale.
  2. Film perforé selon la revendication 1, dans lequel la deuxième direction est différente de la direction transversale et de la direction orthogonale à la direction transversale.
  3. Film perforé selon la revendication 1 ou la revendication 2, dans lequel la première direction est inclinée à un angle supérieur à 30° et inférieur à 60° par rapport à la direction transversale, et dans lequel la deuxième direction est inclinée à un angle supérieur à 30° et inférieur à 60° par rapport à la direction transversale.
  4. Film perforé selon l'une quelconque des revendications 1 à 3, dans lequel, dans la première direction, un rapport d'une longueur α de la première entaille contre un diamètre γ du trou est 0 < α/γ ≤ 500, et dans lequel, dans la deuxième direction, un rapport d'une longueur β de la deuxième entaille contre le diamètre γ du trou est 0 < β/γ ≤ 500.
  5. Film perforé selon l'une quelconque des revendications 1 à 4, dans lequel une différence entre un premier angle qui est un angle d'inclinaison de la première ligne virtuelle par rapport à la direction transversale et un deuxième angle qui est un angle d'inclinaison de la deuxième ligne virtuelle par rapport à la direction transversale est de -5° ou supérieur et de +5° ou inférieur.
  6. Film perforé selon l'une quelconque des revendications 1 à 5, dans lequel la première ligne virtuelle et la deuxième ligne virtuelle s'intersectent orthogonalement.
  7. Film perforé selon l'une quelconque des revendications 1 à 6, dans lequel deux trous disposés le plus près parmi les trous sont alignés le long d'une direction différente de la direction transversale et de la direction orthogonale à la direction transversale.
  8. Film de revêtement comprenant :
    un film perforé (1, 1A, 1B) selon l'une quelconque des revendications 1 à 7 ; et
    une membrane formée en appliquant un liquide (41) ou un corps visqueux sur au moins une surface du film perforé, et en séchant le liquide ou le corps visqueux.
  9. Dispositif de stockage d'électricité comprenant une électrode comportant :
    un film perforé (1, 1A, 1B) selon l'une quelconque des revendications 1 à 7 ; et
    un matériau revêtu formé en appliquant une pâte d'électrode (41) sur au moins une surface du film perforé, et en séchant la pâte d'électrode.
EP14793986.2A 2013-05-09 2014-04-23 Film perforé, film de revêtement, et dispositif de stockage d'électricité Active EP2995433B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013099349 2013-05-09
JP2014041600A JP6473294B2 (ja) 2014-03-04 2014-03-04 穿孔薄膜及びそれを用いた蓄電装置、並びに穿孔薄膜の製造方法
PCT/JP2014/061476 WO2014181689A1 (fr) 2013-05-09 2014-04-23 Film perforé, film de revêtement, et dispositif de stockage d'électricité

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EP2995433A4 EP2995433A4 (fr) 2016-06-01
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KR101889393B1 (ko) * 2016-09-13 2018-08-20 대한민국 Ma 포장 시스템
CN110382216B (zh) * 2016-12-01 2021-10-26 洛桑联邦理工学院 设计韧性或脆性薄膜的可逆弹性和由该设计所得产品
JP7318330B2 (ja) * 2019-06-13 2023-08-01 東洋製罐株式会社 内容液入りパウチ
JP7407005B2 (ja) 2020-01-31 2023-12-28 ニチバン株式会社 穿孔装置
MX2022013891A (es) * 2021-03-11 2023-04-05 Varillas Sergio Fernando Grijalva Empaque para frutas y verduras con barrera antipatogena y proceso de fabricacion.

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EP2995433A1 (fr) 2016-03-16
WO2014181689A1 (fr) 2014-11-13
KR20150126398A (ko) 2015-11-11
US10062907B2 (en) 2018-08-28
KR101814889B1 (ko) 2018-01-04
US20160087279A1 (en) 2016-03-24
CN105163916A (zh) 2015-12-16
CN105163916B (zh) 2017-06-06
EP2995433A4 (fr) 2016-06-01

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